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Finding the Fourth Proportional to 124,602.40, 171,951.22 and 68,013.78

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Solution

The fourth proportional to 124,602.40, 171,951.22 and 68,013.78 is: 93,858.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,602.40 : 171,951.22 = 68,013.78 : x
  2. Step 2: Convert to fraction form
    124,602.40/171,951.22 = 68,013.78/x
  3. Step 3: Cross multiply
    124,602.40x = 171,951.22 × 68,013.78
  4. Step 4: Simplify right side
    124,602.40x = 11,695,052,447.81
  5. Step 5: Solve for x
    x = 11,695,052,447.81/124,602.40
  6. Step 6: Final answer
    x = 93,858.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.